Deep sleep is important for . The actual of sleep you need depends your age. A young child to sleep ten to twelve hours, and a teenager about nine hours. Adults differ a lot in their sleeping . For most of them, seven to wight hours a night is , but some sleep longer, while others manage with only four hours.

For a good night, having a comfortable to sleep is very important. Also, there should be of fresh air in the room. A warm drink sometimes helps people to sleep, it is not a good idea to drink coffee immediately before going to bed.

you have to travel a very long distance, try to go to bed earlier than usual the day before the . This will help you feel more rested when you arrive.